Abstract

This paper describes the results of 3 kinds of thermal fracture tests of asphaltic mixture and stress relaxation test of asphaltic mixture in tension at low temperatures. Test results indicate that the difference between the fracture temperature and the temperature at intercept is about 20°C under various thermal loading conditions, thermal stress under thermal repeated loading conditions corresponds to thermal stress under stress relaxation at constant temperature and the characteristics of stress relaxation under various thermal loading conditions is similar with that of stress relaxation in tension.

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